How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/16None
Week of 5/24100.0*Chance in playoffs100.0*Average seed
Palmeiras 3 Atletico Tucuman 1 In
+0.5
Penarol 2 Jorge Wilstermann 0 In
+0.3
Points
Chance Will Make Playoffs